Noise when RPM hit 7k??

[jason1202]

Hi all bro!!

I am riding a Vara 125. Recently my bike starts to make so tinging noise when the RPM approaches 7k... but after 7k the noise stops... Have anyone experiance it before?

 

Bring to two bikeshops. First says need to do valve clearance but no sure will solve the problem. The other shop says it has no idea watis causing the noise..

 

Althought the problem does not affect my riding, I just can stand the noise! And it is getting louder.. Already checked for loose screws and stuffs.. but nothing is wrong..

 

Can anyone help??

[mepkoh]

is this a knocking kind of noise...something like a hammer hitting on a pipe or something like that?? if that is...use higher octane no. petrol...

[jason1202]

is this a knocking kind of noise...something like a hammer hitting on a pipe or something like that?? if that is...use higher octane no. petrol...

 

Tried... but still the same...

[jytheorem]

Is there a 'leak' in ur exhaust?

[Raptor]

Sound like a loose camchain.

[stsoh]

suspect exhaust header inner-sleeve cracked.

happens to my old ninja n rw.

at low rpm, exhaust gas pulse pushes the sleeve away n back thus the tinging sound.

at high rpm, more than enough gas pressure to hold the sleeve away.

only way to know for sure is disassemble the exhaust header n inspect ID for cracks.

[schmikes1183]

why not go back to an authorized dealer to check it out?? let them access the problem and located it..

[jason1202]

In the end, it was nothing but just a loose screw under the seat.. hahah!! Thanks to the bros who shared their experiences.. Thanks you guys!

[moreira88]

wad the hell....